Manchester City is the most unlucky team to win the Champions League title. They perform well, they have a strong squad. As well as their experience. Even then they can't win the title.
It is undeniable that Man City is often predicted and becomes the favorite as the winner of the UCL. But this is the big game between giant clubs in Europe. Many other clubs also want to get the same title. So every club must have a good performance in every match and must win. If not, then the chance will be immediately taken by other clubs.
UCL, is a prestigious championship that always has high tension, especially if there is a club that is very favorite but must fail to win.
And for this season, we still don't know who the candidates are, because many clubs have started to turn back stronger and played very impressively.